baber/WOPTO huggingface dataset:
Patent GB-826741-A (GB)
Title: Process for the production of calcium substitution products of cyclopentadiene and also of alkylated benzylated and arylated cyclopentadienes
Inventor: ZIEGLER KARL
IPC: C07F3/00
Filed: 1956-02-16
Abstract: Calcium substitution products of cyclopentadiene or alkylated, aralkylated or arylated cyclopentadienes are prepared by reacting cyclopentadiene or an alkylated, aralkylated or arylated substitution product thereof at a temperature up to 160 DEG  C. with calcium carbide in the presence of ammonia or an amine in which the atomic C:N ratio in the molecule is from 1:1 to 2:1 and in which the majority of the nitrogen atoms are present as -NH2 groups.  Amines specified include methylamine, ethylene diamine, diethylene triamine and dipropylene triamine. Acetylene is evolved during the reaction. The calcium carbide should be finely ground, and may be used as a suspension in an inert solvent e.g. decahydronaphthalene.  The calcium biscyclopentadiene may be reacted with carbon dioxide to give the calcium salt of dicyclopentadiene dicarboxylic acid which may be converted to the free acid by acidification.  In an example finely ground calcium carbide suspended in liquid ammonia is reacted with cyclopentadiene.  The gas evolved is passed through dilute acid to remove ammonia and the acetylene collected.  The solid product is calcium cyclopentadiene which may be converted to the calcium salt of dicyclopentadiene dicarboxylic acid by reaction with CO2. Other examples describe the preparation of: (4) calcium isopropyl cyclopentadiene, (5) calcium benzylcyclopentadiene and dibenzylcyclopentadiene dicarboxylic acid, and (6) calcium diphenylcyclopentadiene and diphenylcyclopentadiene dicarboxylic acid.
Patent GB-1476581-A (GB)
Title: Hydraulic safety valve for a well
IPC: E21B34/10
Filed: 1975-02-05
Abstract: 1476581 Wells &c SOC NATIONALE DES PETROLES D'AQUITAINE 5 Feb 1975 [6 Feb 1974 28 Oct 1974] 4897/75 Heading E1F An hydraulic safety stop valve for a well has a flap valve 31, Fig. 3, located in a valve cage 7, and an equalising passage which has two valves 26 and 38, 39, Fig. 2. The flap valve is opened by the downward movement of an inner tube 8, the downward movement being effected by the application of hydraulic fluid on a piston portion 18 thereof via conduit 15, 14, 13, 16. Downward movement of the inner tube also opens the valves of the equalising passage, the passage extending between apertures 23 in communication with the space below the stop valve and apertures 37 which communicate with the space above the stop valve. The first passage valve comprises two opposed frusto-conical surfaces 38, 39, and the second valve 26 is spring biased into the closed position, the valve being opened by the movement of a needle 26' thereof along a cam surface 40 of the inner tube 8 as it is lowered.
Patent GB-689747-A (GB)
Title: Improvements relating to indicating, recording and control apparatus
Inventor: FIELDEN JOHN ERNEST
IPC: G01K7/34
Filed: 1950-02-27
Abstract: 689,747. Electric indicating systems. FIELDEN (ELECTRONICS), Ltd. Feb. 6, 1951 [Feb. 27, 1950; Sept. 1. 1950], Nos. 4940/50 and 21583/50. Class 40 (i). A liquid level varied in accordance with a variable such as fluid-fllow, pressure, specific gravity, temperature &c. is measured by moving one of the electrodes of a capacitor in accordance with the level to permit or block oscillations in an electric circuit whereby means are operated to restore the capacity to a predetermined value and at the same time actuate an indicator or recorder. Fig. 1 shows a manometer for measuring differential pressure in which variations of the liquid level vary the capacity of a ring condenser 2, the capacity variations controlling a two phase motor 4 which rotates a lead screw 3 in the corrective sense to return the ring electrode 2 to its neutral position relative to the liquid surface and at the same time actuate an indicator or a recorder 7, 8. In another embodiment, Fig. 2, the movable electrode 12 is carried by a float 13 in one arm of the manometer tube and the motor 4 raises or lowers a plunger 16 in the other tube arm to bring the float 13 and hence the electrode 12 back to its neutral position. In this case a relay in the motor control circuit may give an alarm in response to rapid changes of the variable in question. In another embodiment the movable electrode is placed in a glass or other non-conducting tube immersed in the liquid, and actuated as above described. Temperature may be measured by using a mercury thermometer, and pressure air-speed, flow, specific gravity &c. may be measured by using a U-tube containing mercury. Motor control circuit, Fig. 3. The grid cathode circuit of an oscillator 18 includes a series connected capacitor 19 and inductor 20, in parallel with the series connected measuring capacitor 2 (or 11, 12, Fig. 2) and inductor 21. This impedance bridge arrangement is such that the valve will oscillate only when the capacitor 19 is greater than the measuring capacitor. The oscillator output is rectified by the grid-cathode circuit of a thyratron 22, so that during the positive half-cycles of the supply 25 when oscillation occurs the condenser 24 is charged negatively to prevent the thyratron firing during the alternate half-cycles. When oscillator 18 is blocked and the thyratron conducting the variable phase of the two phase motor 4 is fed in series with the thyratron anode current and the motor runs in one direction to drive the ring electrode 2, Fig. 1, away from the liquid surface. After a predetermined separation of the electrode 2 from the liquid surface, the valve 18 oscillates and blocks the thyratron. The phasg of the current in the variable phase of the motor is reversed, being now supplied in series with the oscillator anode current. The motor therefore drives the electrode 2 in the reverse direction. The motor thus oscillates the moving electrode about the neutral position.
Patent GB-658881-A (GB)
Title: Improvements in carriage bodies
IPC: B61D17/04
Filed: 1949-02-24
Abstract: 658,881. Vehicle body framework. AKTIESELSKAPET STROMMENS, VAERKSTED. Feb. 24, 1949, No. 5044. Convention date, July 10, 1948. [Classes 103(iv) and 103(i)]  A carriage has a body wall consisting of a system of structural beams of channel form having outer shell plates secured by means of rivets to the webs of the beams, the inner side of the wall having a suitable cover subdivided into sections so spaced that the rivets of the outer shell are accessible from the inside of the carriage between the sections, the spaces between the sections being covered by resilient strips or mouldings adapted to be pressed into position between the inner cover sections without any securing means other than the natural resiliency and friction of the strips, the strips being capable of assembly or removal independently of the remainder of the wall. In the embodiment shown, Fig. 1, metal plates 5, 6, of the wall are riveted at 8 to the web 7 of a substantially channel sectioned frame beam 1. The beam has flanges 11, 12, to which may be secured inner cover plates 10, 9, respectively, provided with heat-insulating material. The opening 2 of the beam is not covered by the inner plates but is closed by a resilient strip 13. If a window 14 is to be arranged in the wall, Fig. 2, the window is secured to the projecting flange 12 of the beam by means of heat-insulating material 15 and securing members 16.
Patent GB-525215-A (GB)
Title: Improvements in or relating to method of and apparatus for straightening bars, rounds or the like
IPC: B21D3/04
Filed: 1939-02-16
Abstract: 525,215. Cold skew-rolling. STEVENS, A. H. (Schaefer, F.). Feb. 16, 1939, No. 5133. [Class 83 (iv)] Round bars &c. are sized and straightened in a skew rolling mill, the first pair of rolls 4, 23 having cylindrical surfaces (and may also have one or two guiding shoulders 231) which give point contact for sizing the work, followed by other roll pairs 6, 25 and 5, 24, at least one pair of which is concave to increase the contact. The third pair 5, 24 is still more concave to smooth the bar. One roll of each pair is adjustable by wedge and handscrews 21 to adjust the pass, the middle pair of rolls being also both adjustable to adjust the pass height for straightening. The middle rolls are driven, the other pairs having a driving motor 14 coupled by gears and rollers to the lower outer rolls 4 and 5 and another motor 59 for the top outer rolls 23 and 24. All the top rolls are mounted in a frame 3 hinged at 65 to allow access to the inside. U.S.A. Specification 1,979,133 is.referred to.
Patent GB-212393-A (GB)
Title: Carburetter
IPC: C10J1/00
Filed: 1923-02-22
Abstract: 212,393. Thompson, C. G. A. Feb. 22, 1923. No Patent granted (Sealing fee not paid). Carburetting.-In carburettors of the kind wherein air is bubbled through the liquid fuel in a series of trays 4 provided with overflow pipes 6, the air tubes 5 are bent over at their upper ends so as to dip into the liquid. The casing 1 is provided at its lower end with an air-inlet chamber 11, and has a truncated conical upper portion 2 communicating with an outlet pipe 3 having a, non-return valve 7. Fuel is fed to the uppermost tray by a pipe 12, the supply being controlled by a valve fitted therein which is actuated by a rod 9 integral with a float 14 operating a chamber 8, in communication with an overflow pipe 10 from the lowermost tray.
Patent GB-1496005-A (GB)
Title: Soil working tines
IPC: A01B33/14
Filed: 1975-02-06
Abstract: 1496005 Soil working tines C VAN DER LELY NV 6 Feb 1975 [8 Feb 1974] 5191/75 Heading A1B A forged or cast tine 30 for use in the rotary harrow of Fig. 1, has a polygonal cross-section throughout a greater part of its length, the shape of its cross-section differing along the greater part and being rhombic in a lower region of the tine. The tine 30 has a fastening portion 29 comprising a screwthreaded cylindrical upper end, an upper tapering part 33 hexagonal in section at each end and dodecagonal in section between its ends, and a lower tapering part 27 of hexagonal section; and a soil working portion 31 of hexagonal section at its upper end (line VIII-VIII) changing to the section shown in Fig. 13 at its lower end (XIII-XIII). Rib 35 is provided on the leading edge. In a modification, Fig. 14 (not shown) the screens 24 are tangential to the boss 14, and the longitudinal axes of the support portions 19, 20 are at an angle to the plane B-B containing the axes h', h, h'.
Patent GB-286265-A (GB)
Title: Improvements in illuminating bodies
IPC: F21S8/00
Filed: 1928-02-20
Abstract: 286,265. Zeiss, C. [Firm of]. March 2, 1927, [Convention date]. Overhead lamps.-In an overhead lamp, the generating curve of a reflector d, in the form of a concave surface of revolution, is such that all reflected rays from a 'substantially point source of light e, arranged on the axis g of rotation of the reflector, cross the axis between points such as h, i so as to form a shadowless, circular field of intense illumination f above an operating-table a or the like. The source of light may comprise a light-dispersing electric lamp bulb, or a clear bulb may be enclosed in a cover of frosted or opal glass. In the form shown in Fig. 2, a clear bulb e is .enclosed in a cover j of heat-absorbing glass which is provided with a reflecting zone k to intercept widely divergent rays and to return them to the reflector d, and the lamp casing l is enclosed by a disc m of wire-reinforced glass. Specification 17657/15, [Class 75 (ii), Lamp chimneys &c.], is referred to.
Patent GB-415081-A (GB)
Title: Improvements in processes for the production of light sensitive layers by means of diazo compounds
IPC: G03C1/54
Filed: 1934-02-16
Abstract: The diazo compounds derived from halogenbenzylaminoarylamines are used as the sensitive material in photographic diazotype processes. The bodies are obtained by diazotizing compounds of the general formula NH2--R--NH.CH2--R<1>, where R is a substituted or unsubstituted aryl nucleus and R<1> is a halogenized benzene nucleus which may be further substituted, e.g. with alkyl, halogen cyano, alkoxy or aryloxy groups.  In an example, the sensitizing solution consists of 4-(dichlorbenzyl-2<1> : 6<1>)-amino-1-diazobenzene, thiourea, boric acid, aluminium sulphate, and an organic acid such as tartaric, citric, acetic, maleic, or succinic acid.  The diazo compound may be replaced by the corresponding 2<1> : 4<1>-dichlor derivative, by diazotized 1-amino-4-(brom-2<1>-chlor-6<1>-benzyl)-aminobenzene, or by diazotized 1-amino-4-(dibrom-2<1> : 6<1>-benzyl)-aminobenzene. 4-(Dichlorbenzyl-2<1> : 6<1>)-amino-1-diazobenzene is prepared by coupling diazotized sulphanilic acid with 2 : 6-dichlorbenzylaniline in acetic acid, reducing with hydrosulphite, diazotizing in hydrochloric acid, and decomposing the nitrosodiazo compound formed, by heating.
Patent GB-470829-A (GB)
Title: Improvements in or relating to machines for applying closures to or removing them from bottles and other containers
IPC: B67B3/00
Filed: 1936-02-21
Abstract: 470,829. Stoppering bottles. GIMSON & CO. (LEICESTER), Ltd., and CLARKE, A. Feb. 21, 1936, Nos. 5289 and 25341. [Class 125 (ii)] An apparatus for applying screw - caps, screwstoppers, corks &c. tc bottles &c. or for removing them, comprises a stoppering-chuck 16 and a fluid-operated piston 21, 22 arranged in a cylinder 15, which moves the chuck towards the bottles, and nut-and-screw means for imparting a rotary motion to the chuck. The main cylinder 1 is positioned over the bottle support (not shown). A plungerlike body 6 is arranged to slide in the cylinder 1 and an annular space 6 is provided between the two. It is packed at 9. In the lower end of the body 6 a bush 12 is screwed which carries an archimedean screw 13. A nut 14 limits the downward motion of the screw. The cylinder 15 is in axial alignment with the cylinder 1. A pair of jaws 17 are provided on the chuck 16, and are secured by a collar 18 and lock-nut 19. A rod 20 extends into the cylinder 15 and carries the piston 21, 22. Surrounding the rod is a compression spring 25. Toggle-levers 26 operate the jaws 17. Relative movement between the slide rod 20 and the screw 13 opens or closes the jaws of the chuck. When there is sufficient fluid pressure in the cylinder 15 to overcome the resistance of the spring 25 the chuck-jaws 17 close and when the fluid pressure is released, they open. A tongue piece on the bracket 27 permits the body 6 to slide therein but not to turn. A roller 30 riding on a cam 29 permits the body 6 and screw 13 to move downwards until the stopper is arrested by the bottle. Compressed-air is the preferred fluid for operating the pistons, but water, oil &c. can be used if desired. The air acts as a cushion while the stopper is '' finding " the bottle. Fluid pressure is admitted to the lower cylinder 15 through a tube 33 and through a hole 42 to the main cylinder. Residual air in the body 6 escapes up the annular space C and through an outlet 47. Valves are provided for controlling the fluid pressures in both cylinders. The capping heads may operate singly; in pairs ; or in a revolving table machine. In a modification the lower cylinder is slidably mounted in the main cylinder. The fluid control valves may be of the rotary disc type. A conveyer may be provided for feeding the bottles &c. to the capping heads. Means are provided for releasing the fluid pressure if a bottle is not in position for capping. The machine may be used with ordinary headed-corks where a turning movement facilitates the corking operation.
Patent GB-525306-A (GB)
Title: Improvements in or relating to gland packings particularly for valves or cocks
IPC: F16K41/02
Filed: 1939-02-17
Abstract: 525,306. Stuffing-box substitutes. DUNLOP RUBBER CO., Ltd., WALSH, A. O., and BRAZIER, S. A. Feb. 17, 1939, No. 5305. [Class 122 (v)] An annular packing member 9 for a valve or cock is formed of rubber or like compressible material and has lubricant grooves 10 in at least two adjacent sealing faces. Excessive pressure on the member 9 is avoided by the use of distance pieces 11 between the cap 7 and casing 1.
Patent GB-1024844-A (GB)
Title: Improvements in or relating to steam turbines
Inventor: RYALL MICHAEL LESLIE
IPC: F01D25/26
Filed: 1962-02-12
Abstract: 1,024,844. Steam turbines. PAMETRADA. Jan. 22, 1963 [Feb. 12, 1962], No. 5340/62. Heading FIT. A steam turbine comprises an inner casing and an outer casing, the inner casing comprising the abutting assembly of rims of the turbine interstage diaphragms and defining with the outer casing a steam zone. The diaphragms are each made in two parts, each part having an external flange which mates with the corresponding external flange of the other part, the flanges having lugs slidably supported on axially-extending ledges in the outer casing. Axial gaps between adjacent lugs provide communication between the portions of the steam zone on opposite sides of the ledges and lugs. In Fig. 3, the turbine comprises a series of diaphragms 1 each of which is formed with an axially thickened rim portion 2, the rim portions abutting together to form a turbine inner casing which is disposed within a cast outer casing 5. The diaphragms are each formed in two parts secured together at the horizontal plane by means of bolts 3 (Fig. 2, not shown), the abutting flanges of each diaphragm being received within a recess 4 within the outer casing whereby the assembly forming the inner casing is supported. Integral lugs 6 formed in the lower half of the outer casing engage recesses in the lower halves of the inner casing. Openings 10 are formed in the rim 2 of a diaphragm whereby steam may be bled from a turbine stage into an annular belt 9b. Further openings 10a are formed in the rim of a second diaphragm whereby steam bled from a lower pressure stage is supplied into a second annular belt 9a, the outlets from the steam belts 9b, 9a being indicated at 11b, 11a. The diaphragm rims abut at the downstream end against an annular flange 7 integral with the outer casing while at the upstream end, an annular ring 8 engages against the upstream end of the assembly of diaphragm rims and is received within an annular groove within the outer casing.
Patent GB-355212-A (GB)
Title: Process of refining crude petrol
IPC: C10G31/06
Filed: 1930-02-18
Abstract: Crude petrol containing phenol is purified by cooling to below -40 DEG C. and removing the precipitated phenols, bases, and colouring, gumming, and associated impurities.  The cooling may be in presence of adsorbents, e.g. kieselguhr.  The petrol may be fractionally distilled, and only the 170-200 DEG  C. fraction cooled, as in this fraction the greater part of the phenols and bases are present; the bases may be removed from the lower-boiling fraction by washing with water; the fractions may then be reunited.  In an example, crude petrol from the destructive hydrogenation of coal is distilled, and the 170-200 DEG  C. fraction cooled to -55 DEG  C.; two layers are formed, the upper conttaining 13 per cent of phenol, the lower 60 per cent; the layers are separated, and treated for the recovery of the phenol, e.g. by extraction with petroleum ether as described in Specification 355,213, [Group IV].  Or the lower layer may be treated in the vapour phase with hydrogen in presence of known catalysts to form hydrocarbons which are blended with the upper layer or with other liquid fuels to form motor spirit.  The process is more efficient with petrols containing a large proportion of paraffins than with highly aromatic petrol.ALSO:Crude petrol containing phenols is purified by cooling to below -40 DEG  C. and removing the precipitated phenols, bases, &c.  The cooling may be in presence of adsorbents, e.g. kieselguhr.  The petrol may be fractionally distilled, and only the 170-200 DEG  C. fraction cooled, as this fraction contains the greater part of the phenols and bases.  In an example, crude petrol from the destructive-hydrogenation of coal is distilled, and the 170-200 DEG  C. fraction cooled to -55 DEG  C.; 2 layers are formed, the upper containing 13 per cent of phenols, the lower 60 per cent; the layers are separated and treated for the recovery of the phenol, e.g. by extraction with petroleum ether as described in Specification 355,213.
Patent GB-988312-A (GB)
Title: Improvements relating to envelopes for basket anodes for electro plating
Inventor: FROST HARRY
IPC: C25D17/10
Filed: 1963-02-09
Abstract: A textile fabric bag or envelope 4, adapted to fit over plating anode baskets 5, has two lengths of beading 7, in parallel relationship secured lengthwise thereto, and a clip member 9 which is adapted to embrace the two lengths of beading to draw the same together, and with <PICT:0988312/C6-C7/1> them the fabric of the envelope, to tighten it around the basket. The envelope may be provided with a gusset 6, the beading being located at the points 8 of connection of the gusset to the envelope.  The clip 9 is of tubular shape with a longitudinal slot 10 therein, which clip is slid over the pair of beading members 7, the inturned edges 11 of the clip engaging the underpart of the beadings to draw them together.  The beading members may be of cord, flexible plastic or a suitable rigid material.
Patent GB-1214021-A (GB)
Title: Improvements in tonometers
Inventor: POSNER ADOLPH
IPC: A61B3/16
Filed: 1968-02-02
Abstract: 1,214,021. Tonometer. A. POSNER and R. INGLIMA. 2 Feb., 1968 [3 Feb., 1967], No. 5387/68. Heading ASK. An aplanation tonometer comprises a hub portion 10 from which projects one or two axially aligned tubes 17 having at their ends removable end plates 18 which are held in frames such as 18a (Fig. 4, not shown) which fit over the ends of the tubes and are held in place by suitable means such as friction and/or magnetic force (Figs. 7 and 8, not shown). The device is housed within an outer tube 13 (or 19 in Fig. 3) having open ends through which the or either end of the tonometer may project when in use. The tonometer is constructed so that either the end plates or the entire instrument is discardable, the outer tube being made of paper or the like (see Fig. 10, not shown).
Patent GB-306541-A (GB)
Title: Improvements in or relating to method of and apparatus for heat treating signalling conductors
IPC: C22F1/08
Filed: 1929-02-18
Abstract: 306,541. Electrical Research Products, Inc., (Assignees of Legg, V. E.). Feb. 24, 1928, [Convention date]. Annealing; annealing-boxes. - A method of heat-treating a loaded or unloaded copper conductor comprises heating it in coiled form in an inert or rarefied atmosphere in a closed vessel to a temperature at which in the presence of reducing gases it would be rendered brittle, and thereafter slowly cooling it. In the apparatus shown, a coil of the conductor is heated on a reel 40 in a pot 10 of the shape shown mounted in an electric furnace 20. A gas such as nitrogen is supplied by a pipe 9 to the interior of the reel and enters the pot through holes 42 and passes out through pipes 7; or the current may be in the reverse direction, or the pot may be exhausted through the pipes 7. The lid 12 of the pot is. sealed by means of a plastic metal ridge 16. Specification 273,638 is referred to.
Patent GB-139884-A (GB)
Title: Improvements in combined brushes, scrapers and polishing pads
IPC: A47L23/04
Filed: 1919-03-05
Abstract: 139,884. Favitt, E. G. March 5, 1919. Brushes combined with pads and scrapers.- A cleaning or polishing device, particularly for boots and shoes, comprises a pair of pads, or a brush and a pad, detachably held together by a locking-wedge f adapted to be inserted between them through retaining-loops d, d<1>. Grooves b are formed in the bristle side of the brush stock, into which the links are sprung, and the wedge f may be extended at one end to form a handle e and shaped at its other end to form a scraper edge g. The pad may be dispensed with and the wedges engage directly the free sides of the loops or the brush element replaced by a second pad.